Results 1 to 10 of about 38,287 (310)
The CLASS blazar survey: testing the blazar sequence [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We discuss the properties of the sources in the CLASS Blazar survey which aims at the selection of low radio power (P(5GHz)<10^25 W Hz^-1) blazars. We use VLA data from available catalogues and from our own observations to constrain the radio core-dominance of the sample which, together with the flat radio spectral index, is a signature of the ...
Alessandro Caccianiga, M. J. M. Marchã
openaire +4 more sources
Astrophysical Neutrinos and Blazars [PDF]
Universe, 2021 We review and discuss recent results on the search for correlations between astrophysical neutrinos and γ-ray-detected sources, with many extragalactic studies reporting potential associations with different types of blazars. We investigate possible dependencies on blazar sub-classes by using the largest catalogues and all the multi-frequency data ...
Paolo Giommi, Paolo Padovani
openaire +6 more sources
Unifying MeV-blazars with GeV-blazars [PDF]
arXiv, 2002 We demonstrate that the spectral differences between Flat Spectrum Radio Quasars (FSRQ) with steep gamma-ray spectra (MeV-blazars) and FSRQ with flat gamma-ray spectra (GeV-blazars) can be explained by assuming that in the MeV-blazars, the production of gamma-rays is dominated by Comptonization of infrared radiation of hot dust, whereas in the GeV ...
Blazejowski, M. +3 more
arxiv +5 more sources
On the Nature of MeV-blazars [PDF]
The Astrophysical Journal, 2002 Broad-band spectra of the FSRQ (flat-spectrum-radio quasars) detected in the high energy gamma-ray band imply that there may be two types of such objects: those with steep gamma-ray spectra, hereafter called MeV-blazars, and those with flat gamma-ray ...
Baker J. C. +16 more
core +3 more sources
The recognition of blazars and the blazar spectral sequence [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 Accepted for publication in ...
Ian Browne, Sonia Anton, Sonia Anton
openaire +3 more sources
Basic properties of Fermi blazars and the ‘blazar sequence’ [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 13 pages, 1 table, 13 figures, accepted for publication in MNRAS.
Dingrong Xiong +3 more
openaire +3 more sources
Immunohistopathology of oral mucosal chronic graft‐versus‐host disease severity and duration
Oral Diseases, Volume 29, Issue 8, Page 3346-3359, November 2023., 2023 Abstract Objective Chronic graft‐versus‐host disease (cGVHD) is the main cause of late non‐relapse mortality following hematopoietic cell transplantation. Oral mucosal (om‐) cGVHD is common, but diagnosis and assessment rely on clinical interpretation and patient‐reported symptoms.
Victor Tollemar +8 more
wiley +1 more source
A tool to understand emission mechanisms of blazars through their high‐energy gamma‐ray emission
Astronomische Nachrichten, Volume 344, Issue 6, August 2023., 2023 The blazar SED is characterized by two energy components. Evidence suggests that the low‐energy component is generated by the synchrotron mechanism, but for the high‐energy component, the mechanism is still uncertain. Two main models have been proposed to explain this emission. According to the leptonic model, a correlation between the emission of both
Mabel Osorio +3 more
wiley +1 more source
SYNCHROTRON POLARIZATION IN BLAZARS [PDF]
The Astrophysical Journal, 2014 We present a detailed analysis of time- and energy-dependent synchrotron polarization signatures in a shock-in-jet model for gamma-ray blazars. Our calculations employ a full 3D radiation transfer code, assuming a helical magnetic field throughout the jet.
Xuhui Chen +4 more
openaire +7 more sources
The impact of guardian's usage of the Internet on children's cognitive skills
International Studies of Economics, Volume 18, Issue 2, Page 193-210, June 2023., 2023 Abstract In the digital age, the internet has become an essential source of information gathering and maintains a network of social contact. In this paper, we use microdata from the China Family Panel Studies to examine the effects of guardian's internet use on teenager's cognitive skills.
Guangsu Zhou, Keyi Guo
wiley +1 more source